Steam-generator



3 Sheets-Sheet 1.

No Model.) H. E. FRAUZ.

STEAM GENERATOR.

Patented June 4 Wit names,

(no Model.) a Sheets-Sheet 2.

H. E. FRAUZ. STEAM GENERATOR.

No 540,612. Patented Jun 4, 1895.

' wua wtoi 39mm KM (NoModeL) 3 Sheets-Sheet 3. H. E. FRAUZ.

STEAM GENERATOR.

No. 540,612. Patented June 4, 1895.

UN ITE HERMAN E. FRAUZ, OF BALTIMORE, MARYLAND.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 540,612, dated. June 4', 1895.

Application filed November'ZB, 1894. Serial No. 530,001. on model.)

To all whom it may concerm Be it known that I, HERMAN E. FRAUZ, a'citizen of the United States, residing in the city of Baltimore and State of Maryland, have inventedcertain new and useful Improvements in Steam-Generators; and I do hereby declare the following to" be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains' to make and use the same.

My present invention relates to steam-generators, has especial reference to that class of water tube generators of pipe construction in which a number of tubes constituting the chiefheating surface are connected to headers which afford the means of conductingthe water and the steam from the tubes, as well as r supplying the tubes with water fromwhich steam is generated, and has-for its object improvements in the construction shown in Letters Patent of the United States nu mbered 527,526, granted to me on the 16th. of October,

A. D. 1894, which improvementswill be fully disclosed in the following specificationand' claims. v

In the accompanying drawings, which form part of this specification, Figure "1 is aperspective of a double header, showing the rear thereof Fig. 2, a like view showing the front of said header; Fig. 3,'a like view of a single header, showing the rear thereof; Fig. 4, a like view showing the front of said header; Fig. *5, alike view of a lower single header, showing the front thereof, and all" of these figures show the headers on an enlarged scale compared with the remaining figures'of the drawings. Fig. 6 represents a front elevation, partly in section, of a steam-generator of my improved construction, showing; the headers in position on one side of the vertical trans-e verse center of the generator and the header's removed on the opposite side of said center, and Fig. 7avertical longitudinal section showing the separator in side elevation and the water-drum in end elevation. I

Reference being had to thedrawings and the letters thereon, A indicates a single header which is rectangular in form and inclined toward the vertical transverse center of the genorator and is provided in its front side with hand-holes a through which the'tubes and some of the connectingnipples are expanded and cleaned, with hand holes 12 b. through the nipples c which connect the headers at their ends and are expanded in the holes d in the headers and with suitable hand-hole covers 6 secured by dogs f and bolts 9 in the usual manner; and in the rear side with holes h to receive water tubes and which holes and tubes are arranged in groups preferably of six as .shown in Figs. 3, 6, and 7. b 1

Bygrouping a number of small tubes a greater area of heating surface is obtained within the samemean area than when large tubes are used.

c arein the, upper and lower sides of alltho headers except the upper and lower ones of the series, in which two the hole d occurs on the upper and lowerside of the header-at the inner end of the upper one only, by which the generator. I

B indicates a double header which is of the same general construction andform as the to receive water tubes.

. as to afford ample furnace room and a spacious combustion chamber, and at the same. time protect. the sides of the combustion chamber by reducing the amount of brick work or other sides.

in-anyconvenient number and are connected together by nipples ,c as shown in Fig. 6 by the parts broken away and to the separator O rator, thus dispensing with the receiver or uptake of my former construction. Each rear header isin like manner connected to its contiguous headers and the upper one of the series is connected to the water drum D and plane thanthe front headers, as shown in Fig.

.The holesd for the receptioirof the nipples The headers are assembled in a generator one above another to any desired heightand sov as to form a direct passage for the steam through v the headers themselves to thesepasaid rear headers are arranged on a lower upper header is connected to the separator in front'and to thewater drum in the rear of the he'aderA, and is provided in its front side with Q hand-holes a and b, and in its upperand lower sides with holes 01 d to connect the headers, together directjby nipples, andwith holes h h The inclination of the hea'ders across the, 7 generator allows the tube'sto be so disposed by intercepting the heat at thatpoint, thererefractory material necessary to protect the 2 intents 7 to provide the proper inclination of the water tubes E which connect the front and rear headers. I

The separator is arranged in the transverse center' of the generator above the head ers and their connecting tubes and extends from the front to the rear of the generator, and at the rear end is connected by a pipe 1' to the water drum D which extends across the generator and above the rear headers, as shown in Fig. 7. The separator and the water-dru m are joined together in the same manner as the front upper header is joined to the separator.

, F F are attached to the lower header A oneach sideof thegenerator and form water legs,

To utilize the heat of the furnace, sections as shown in Figs. 6 and 7, the headers of the sections being connected to the lower headers by nipples c in like manner as the headersA are connected together; an illustration of which connection is shown at the rear end of the generator in Fig. 7.

The opposite connected headers are joined transversely of the generator by a bolt-rod 7.: which may be incased'in a tube k'and engages lugs Z on the lower headers and by the inclination of the headers form a complete truss and the headers thus joined rest upon a metal stand Z by flangesmat the outer end of both the lower headers.

The bolt-rod 7c is protected against heat of the furnace by masonry n and to support the masonry a manifold G may be attached to the lower headers on each side of the transverse center of the furnace. The tubes 0 of the manifold may connect with the headers of the sections F, F, and at the inner end of the manifold it is connected to the lower side of the header A and at the inner end thereof by a By the system of pipe connectionsdescribed,

perfect and free circulation of the water in the generator is maintained and partof the separatorand the whole of the waterdrunr are contained within the casing ll.

It will be observed that the water-d rum and the separator are exposed to the products of combustion from the furnace, and in order to confine and direct the gasesemanating from the fuel tothe water tubes E, a baffle plate I is interposed above the tubes of the lower header, a crownK in the upper part of the combustion chamber and narrow vertical bafiie plates L L, between the tubes of the upper two headers.

It is obvious that the headers may be inclined downward from the sides toward, the center of the generator or they may be curved or sinuous without departing from the spirit of myinvention so long as the headers are inclined.

' An ordinary steam and water gage M may be attached to the separator C and the waterdrum as shown in Fig. 1.

The furnace is no part of my present invention and any approved form of construction maybe used.

The generator constructed as described is especially designed for use as a marine gem erator and in its construction single headers are preferred for large generators and double headers for small generators and in either instance steel castings are preferred for the headers.

Having thus fully described my invention, what I claim is-- 1. A header inclined inwardly toward the transverse center of a steam generator and provided with openings in its inner side for the reception of water tubes, openings in its upper and lower sides and at both ends to connect one header directly to contiguous headers whereby circulation is maintained through the headers and handholes in the froutof the header.

2. A header inclined inwardly toward the transverse center of a steam generator and provided with openings for the reception of tubes, hand-holes opposite said tubes and a log on the lower side of the header to receive a bolt. I

l 3. The combination of a plurality of headers inclinefdtoward the center of a generator and connected directly one to the other at both ends, whereby circulation is maintained through the headers, a separator with which the front headers communicate and a water drum which communicates with the rear lieaders.

4. The combination of headers inclined toward the center and from opposite sides of a steam generator and provided'with water circulating tubes, and a transverse tie-rod engaging the headers and forming a truss.

5. The'combination of a plurality of headers inclined toward the center ofa generator, and sections forming water legson each side of. the furnace between the front and rear headers and connected thereto on their inner sides.

In testimony-whereof I aiifix my signature in presence of two witnesses.

IIERliIAN FRAUZ. Witnesses:

D. C. REIN HL, D. W. REINOHL. 

